fix: use static rotating greeting list instead of AI-generated login greeting

apps/Backend/src/routes/greeting.ts

@@ -1,61 +1,27 @@
 import express, { Request, Response } from "express";
-import { prisma as db } from "@repo/db/client";
-import { resolveAiProvider, getLlm } from "../ai/llm-factory";
 
 const router = express.Router();
 
-const FALLBACK_GREETINGS = [
+const GREETINGS = [
   "How can I help you today?",
   "What can I do for you today?",
   "Ready when you are.",
   "What's on your mind today?",
   "Let's get started.",
+  "What would you like to work on?",
+  "How can I assist you?",
+  "What are we tackling today?",
+  "Where should we begin?",
+  "Let me know what you need.",
+  "What brings you here today?",
+  "How can I make your day easier?",
+  "What's next on the list?",
+  "I'm here whenever you're ready.",
 ];
 
-let cachedGreeting: { text: string; date: string } | null = null;
-
-function todayKey() {
-  return new Date().toISOString().slice(0, 10);
-}
-
 router.get("/", async (_req: Request, res: Response): Promise<any> => {
-  try {
-    const today = todayKey();
-
-    if (cachedGreeting && cachedGreeting.date === today) {
-      return res.status(200).json({ greeting: cachedGreeting.text });
-    }
-
-    const aiSettings = await db.aiSettings.findFirst();
-    const activeAi = aiSettings ? resolveAiProvider(aiSettings) : null;
-
-    if (!activeAi) {
-      const fallback = FALLBACK_GREETINGS[Math.floor(Math.random() * FALLBACK_GREETINGS.length)];
-      return res.status(200).json({ greeting: fallback });
-    }
-
-    const llm = getLlm(activeAi.provider, activeAi.key, activeAi.model);
-    const result = await llm.invoke([
-      {
-        role: "system",
-        content: "Generate a single short AI greeting, similar to how ChatGPT or Claude greets users. Keep it to one short sentence. Examples of the style: 'How can I help you today?', 'What's on your mind?', 'Ready when you are.', 'What can I do for you today?'. Be warm but concise. Do not use emojis. Do not mention names. Vary each greeting.",
-      },
-      {
-        role: "user",
-        content: "Generate a short greeting.",
-      },
-    ]);
-
-    const greeting = typeof result.content === "string"
-      ? result.content.trim()
-      : FALLBACK_GREETINGS[0]!;
-
-    cachedGreeting = { text: greeting, date: today };
-    return res.status(200).json({ greeting });
-  } catch {
-    const fallback = FALLBACK_GREETINGS[Math.floor(Math.random() * FALLBACK_GREETINGS.length)];
-    return res.status(200).json({ greeting: fallback });
-  }
+  const greeting = GREETINGS[Math.floor(Math.random() * GREETINGS.length)];
+  return res.status(200).json({ greeting });
 });
 
 export default router;